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125549RECLASSIFY CONTINGENCY12/03/2025 09:41:35 AM
Reclassification of a Non-Credible Contingency Event: Tungatinah-Lake Echo-Waddamana 1 110kV line and Tungatinah-Waddamana 2 110kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Duration: 12/03/2025 09:41 until further notice
Constraint set(s) invoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Lines: Tungatinah-Lake Echo-Waddamana 1 110kV and Tungatinah-Waddamana 2 110kV
Duration: 12/03/2025 09:41 until further notice
Constraint set(s) invoked:
T-TUWA12_110_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
125547MARKET SYSTEMS12/03/2025 09:06:20 AM
Inital - CHG0101876 - Pre-Prod eMDM Hotfix Maintenance Release
Change Number: CHG0101876
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MDM - Meter Data Management_PreProd
Change Title: Pre-Prod eMDM Hotfix Maintenance Release
Change Start Date & Time: 12/03/2025 13:00:00
Change End Date & Time: 12/03/2025 17:00:00
Outage Start Date & Time: 12/03/2025 13:00:00
Outage End Date & Time: 12/03/2025 17:00:00
Environment: Pre-Production
Participant Impact and Requirements: Users will not be able to access MSATS during the outage period.
Meter data processing and RM reports will not be available during the outage period.
User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.
MSATS B2B/B2M Transactions and B2B MSATS Screens will be unavailable during this outage
NMI Discovery will not be available during the outage period.
CDR and CDP will not be available during the outage period.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
Notification issued to: Market Notice
Notification Type: Initial
Change Type: Normal
Service/ Component: MDM - Meter Data Management_PreProd
Change Title: Pre-Prod eMDM Hotfix Maintenance Release
Change Start Date & Time: 12/03/2025 13:00:00
Change End Date & Time: 12/03/2025 17:00:00
Outage Start Date & Time: 12/03/2025 13:00:00
Outage End Date & Time: 12/03/2025 17:00:00
Environment: Pre-Production
Participant Impact and Requirements: Users will not be able to access MSATS during the outage period.
Meter data processing and RM reports will not be available during the outage period.
User Rights Management (URM) will continue to operate, however the administration screens will not be accessible.
MSATS B2B/B2M Transactions and B2B MSATS Screens will be unavailable during this outage
NMI Discovery will not be available during the outage period.
CDR and CDP will not be available during the outage period.
Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?id=pp_services_status for any planned/unplanned maintenance activities .
125546RECLASSIFY CONTINGENCY12/03/2025 08:59:51 AM
Reclassification of a Non-Credible Contingency Event: Gordon - Chapel St No 1 220kV line and Gordon - Chapel St No 2 220kV line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Lines: Gordon - Chapel St No 1 220kV and Gordon - Chapel St No 2 220kV
Duration: 12/03/2025 08:59 until further notice
Constraint set(s) invoked:
F-T-CSGO Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
T-CSGO_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Lines: Gordon - Chapel St No 1 220kV and Gordon - Chapel St No 2 220kV
Duration: 12/03/2025 08:59 until further notice
Constraint set(s) invoked:
F-T-CSGO Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
T-CSGO_N-2 Constraint set contains the following interconnector(s) on the left hand side:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
125545RECLASSIFY CONTINGENCY12/03/2025 08:45:25 AM
Reclassification of a Non-Credible Contingency Event: Farrell - Reece No. 1 and No. 2 220kV lines in TAS due to lightning.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to lightning.
AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS
Lines: Farrell - Reece No. 1 and No. 2 220kV lines
Duration: 12/03/2025 08:45 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
T-GH_RC12_250
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to lightning.
AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS
Lines: Farrell - Reece No. 1 and No. 2 220kV lines
Duration: 12/03/2025 08:45 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
T-GH_RC12_250
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Manager NEM Real Time Operations
125544RECLASSIFY CONTINGENCY12/03/2025 08:02:10 AM
Reclassification of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown line in TAS1 due to Lightning.
AEMO ELECTRICITY MARKET NOTICE
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 12/03/2025 08:02 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Duration: 12/03/2025 08:02 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
125542RECLASSIFY CONTINGENCY12/03/2025 06:08:06 AM
Cancellation of the reclassification of a Non-Credible Contingency Event: Farrell - Reece No. 1 and No. 2 220kV lines in TAS due to lightning.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to lightning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Lines: Farrell - Reece No. 1 and No. 2 220kV lines
Cancellation time: 12/03/2025 06:10
Constraint set(s) revoked: T-GH_RC12_250
F-T-FARE_N-2
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Refer AEMO Electricity Market Notice 125541
Manager NEM Real Time Operations
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to lightning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: TAS
Lines: Farrell - Reece No. 1 and No. 2 220kV lines
Cancellation time: 12/03/2025 06:10
Constraint set(s) revoked: T-GH_RC12_250
F-T-FARE_N-2
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Refer AEMO Electricity Market Notice 125541
Manager NEM Real Time Operations
125541RECLASSIFY CONTINGENCY12/03/2025 04:35:50 AM
Reclassification of a Non-Credible Contingency Event: Farrell - Reece No. 1 and No. 2 220kV lines in TAS due to lightning.
AEMO ELECTRICITY MARKET NOTICE.
Reclassification of a non-credible contingency event as a credible contingency event due to lightning.
AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS
Lines: Farrell - Reece No. 1 and No. 2 220kV lines
Duration: 12/03/2025 04:30 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
T-GH_RC12_250
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Manager NEM Real Time Operations
Reclassification of a non-credible contingency event as a credible contingency event due to lightning.
AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: TAS
Lines: Farrell - Reece No. 1 and No. 2 220kV lines
Duration: 12/03/2025 04:30 until further notice
Constraint set(s) invoked: F-T-FARE_N-2
T-GH_RC12_250
Constraint set contains the following interconnector(s) on the left hand side:
T-V-MNSP1
Manager NEM Real Time Operations
125540RECLASSIFY CONTINGENCY11/03/2025 09:20:38 PM
Cancellation of the reclassification of a Non-Credible Contingency Event: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines in SA due to severe weather warning .
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 2115 hrs 11/03/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 125537
Manager NEM Real Time Operations
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 2115 hrs 11/03/2025
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 125537
Manager NEM Real Time Operations
125539RECLASSIFY CONTINGENCY11/03/2025 08:25:08 PM
Cancellation of a Non-Credible Contingency Event: Penola West - South East 132 kV line and the Kincraig - Penola West 132 kV line in SA due to Lightning.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Penola West - South East 132 kV line and the Kincraig - Penola West 132 kV line
Cancellation time: 11/03/2025 20:25
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125528
Manager NEM Real Time Operations
Cancellation of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Penola West - South East 132 kV line and the Kincraig - Penola West 132 kV line
Cancellation time: 11/03/2025 20:25
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125528
Manager NEM Real Time Operations